Sign support



FIG. 1 is a front perspective view of a sign support according to the invention;

FIG. 2 is a front elevational view of the sign support, the rear elevational view being a mirror image thereof;

FIG. 3 is an enlarged top plan view of the sign support;

FIG. 4 is a right side elevational view of the sign support of FIG. 3, the left side elevational view being a mirror image thereof; and,

FIG. 5 is a bottom plan view of the sign support of FIG. 3.

The broken lines in the drawings depict environmental structure, which forms no part of the claimed design. The sign support is shown with break lines to indicate the support has indeterminate length. 

The ornamental design for a sign support, as shown and described. 